Yes, all electrical installation work must be carried out by a qualified electrician in accordance with UK regulations (BS 7671). This ensures safety and compliance with building regulations.

Standard back box depths are 25mm, 35mm, and 47mm. 25mm is standard for most installations, 35mm provides more space for wiring, and 47mm is used for deeper installations or when additional wiring space is needed.

There is no specific minimum height requirement for switches in UK regulations, but common practice is to install switches at 1200mm (1.2m) above finished floor level for accessibility. However, specific requirements may apply for accessible installations. Always consult BS 7671 and building regulations, and use a qualified electrician.

Yes, BS 7671 requires RCD (Residual Current Device) protection for most new electrical installations, including socket outlets, lighting circuits, and circuits supplying equipment in bathrooms. RCD protection provides additional safety by detecting earth faults and disconnecting the supply. All new installations must comply with current BS 7671 regulations.